If you want to enable features based on the license type then you include something to identify the enabled features in the "ProductInfo" when you generate the license.
The Licensed Application sample (which is installed when you install our evaluation software) illustrates using the EvaluationMonitor class. You can open the sample projects from Start->Programs- ...
The normal mechanism for evaluations/trial versions is to allow your application to run if there is no license installed but restrict the allowed features and/or use the EvaluationMonitor class to res ...